Use state.scheme=hash (#15)

As of [Geth 1.14](https://github.com/ethereum/go-ethereum/releases/tag/v1.14.0), state storage defaults to `--state.scheme=path` mode for new DBs. This doesn't yet support archiving, so for now we need to explicitly use the old `hash` scheme.

Reviewed-on: #15

stack-orchestrator/container-build/cerc-fixturenet-eth-geth/Dockerfile

@@ -16,6 +16,8 @@ COPY --from=geth /usr/local/bin/geth /usr/local/bin/
 COPY --from=fnetgen /opt/genesis /opt/testnet
 
 # Initialize the geth db with our config
-RUN geth --datadir ~/ethdata init /opt/testnet/build/el/geth.json && rm -f ~/ethdata/geth/nodekey
+RUN geth --datadir ~/ethdata --state.scheme hash \
+    init /opt/testnet/build/el/geth.json && \
+    rm -f ~/ethdata/geth/nodekey
 
 ENTRYPOINT ["/opt/testnet/run.sh"]

stack-orchestrator/container-build/cerc-fixturenet-eth-geth/run-el.sh

@@ -75,6 +75,7 @@ else
       --http.corsdomain="*" \
       --networkid="${NETWORK_ID}" \
       --netrestrict="${NETRESTRICT}" \
+      --state.scheme hash \
       --gcmode archive \
       --txlookuplimit=0 \
       --cache.preimages \